Qwen 4 built a rocket launch simulator in one HTML file, and it actually reaches orbit 🚀
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Qwen 4 built a rocket launch simulator in one HTML file, and it actually reaches orbit 🚀 then i asked it to review itself. it caught its own bug from the telemetry: the launch pad wasn't rotating with the planet, so the rocket was launching sideways at 153 m/s. it fixed it and re flew the whole mission to prove it. real RK4 physics, gravity turn, staging where the booster tumbles away on its own trajectory, live orbital elements. it coasted to a 131 x 80 km orbit and held it for 3 full revolutions at 50x time warp. one file. three.js from a CDN. no physics library.
Posted by Joey (5.2k followers) 1 h ago · 11 likes · 558 views · view the original post on X. Kept by the Vibe Coding Radar as Coding agents.
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